<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <title>jQuery和js的DOM-关键字this</title>
</head>

<body>
     <ul>
        <li>1</li>
         <li id="elem">2</li>
         <li>3</li>
        </ul>
</body>
<script src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.6.3.js"></script>
<script>
    var en = document.getElementById("elem");
    console.log(en);
    console.log($(en));
    console.log($("li")[1])
    $("li").click(function () {
        $(this).text("通过this修改点击元素文本")
    })
</script>

</html>